業ㄧㄝˋ精ㄐㄧㄥ於ㄩˊ勤ㄑㄧㄣˊyèjīngyúqín

简业精于勤

唐·韓愈〈進學解〉：「業精於勤，荒於嬉。」意思是學業上的精深造詣，出於勤奮。例「業精於勤，不可荒廢美好年華」。

英mastery of study lies in diligence (idiom). You can only master a subject by assiduous study., Excellence in work is only possible with diligence., Practice makes perfect.